Electric and magnetic fields generated by lightning cause a serious hazard to various systems.Now windturbine installations with higher power capacity are increasing.Higher power capacity requires higher height and sothere is more probability of lightning strike.Blades are the most probable components to be struck by lightning. The most common lightning protection system for the blades consists of several metallic receptors on the bladesurface.Those are connected to the ground by metallic down-conductors placed inside the blade shell.This paperstudies effects of the receptor configurations on protecting the blade against lightning strike.For this purpose，ananalysis procedure based on finite element method（FEM）in COMSOL Multiphysics software environment is used. The voltage distribution around the blade is simulated for various configurations of receptors.The best configurationis presented.Simulations are performed on the blade model of a special wind turbine，which isVESTAS V47”.